<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="../bootstrap-5.1.3-dist/css/bootstrap.css">
  <script src="../bootstrap-5.1.3-dist/js/bootstrap.js"></script>
</head>

<body class="container">
  <h3 align="center">按钮边框颜色</h3>
  <button type="button" class="btn btn-outline-primary">首页</button>
  <button type="button" class="btn btn-outline-secondary">电器</button>
  <button type="button" class="btn btn-outline-success">男装</button>
  <button type="button" class="btn btn-outline-danger">女装</button>
  <button type="button" class="btn btn-outline-warning">特产</button>
  <button type="button" class="btn btn-outline-info">手机</button>
  <button type="button" class="btn btn-outline-light">电脑</button>
  <button type="button" class="btn btn-outline-dark">水果</button>
</body>

</html>